CN102741593A - Automatic transmission hydraulic control device - Google Patents

Automatic transmission hydraulic control device Download PDF

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Publication number
CN102741593A
CN102741593A CN2011800063791A CN201180006379A CN102741593A CN 102741593 A CN102741593 A CN 102741593A CN 2011800063791 A CN2011800063791 A CN 2011800063791A CN 201180006379 A CN201180006379 A CN 201180006379A CN 102741593 A CN102741593 A CN 102741593A
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CN
China
Prior art keywords
oil
gear
oil circuit
valve
pressure
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Pending
Application number
CN2011800063791A
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Chinese (zh)
Inventor
清水哲也
兵藤芳充
西尾聪
小嶋一辉
石川和典
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Aisin AW Co Ltd
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Aisin AW Co Ltd
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Publication date
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Publication of CN102741593A publication Critical patent/CN102741593A/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • F16H61/04—Smoothing ratio shift
    • F16H61/0437—Smoothing ratio shift by using electrical signals
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • F16H61/02—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used
    • F16H61/0202—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used the signals being electric
    • F16H61/0204—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used the signals being electric for gearshift control, e.g. control functions for performing shifting or generation of shift signal
    • F16H61/0206—Layout of electro-hydraulic control circuits, e.g. arrangement of valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • F16H61/04—Smoothing ratio shift
    • F16H61/06—Smoothing ratio shift by controlling rate of change of fluid pressure
    • F16H61/061—Smoothing ratio shift by controlling rate of change of fluid pressure using electric control means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • F16H61/04—Smoothing ratio shift
    • F16H2061/0481—Smoothing ratio shift during range shift from drive (D) or reverse (R) to neutral (N)
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • F16H61/04—Smoothing ratio shift
    • F16H2061/0485—Smoothing ratio shift during range shift from neutral (N) to reverse (R)
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • F16H61/04—Smoothing ratio shift
    • F16H2061/0488—Smoothing ratio shift during range shift from neutral (N) to drive (D)
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/20—Control lever and linkage systems
    • Y10T74/20012—Multiple controlled elements
    • Y10T74/20018—Transmission control
    • Y10T74/20024—Fluid actuator

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Control Of Transmission Device (AREA)

Abstract

The disclosed automatic transmission hydraulic control device is provided with a reverse range hydraulic oil passage (g1), and a third switching unit (22, S2) which is connected to a discharge extension oil passage (i) for slowing the discharge of hydraulic oil and which switches between connecting the reverse range hydraulic oil passage (g1) and the discharge extension oil passage (i) with a hydraulic servo (42). When a manual valve (MV) is switched to N range, the third switching unit (22, S2) connects the hydraulic servo (42) and the discharge extension oil passage (i), and when the manual valve is switched to the D range or the R range, the third switching unit (22, S2) connects the hydraulic servo (42) and the reverse range hydraulic oil passage (g1). By this means, oil discharge from the hydraulic servo (42) is not prone to occur during R-N switching, but occurs easily in D range.

Description

The hydraulic pressure control device of automatic transmission
Technical field
The present invention relates to be installed in the hydraulic pressure control device of the automatic transmission on the vehicle etc., in detail, relating to can be to being used for discharging from the oil servomotor of frictional engagement member the hydraulic pressure control device of the automatic transmission that the oil circuit of oil pressure switches.
Background technique
Generally speaking; In the multistage automatic transmission on being installed in vehicle etc.; Come the rotation status of each rotating member of change gear mechanism is controlled according to the jointing state of a plurality of frictional engagement members; Form each speed change retaining thus, and utilize solenoid valve that joint is compressed into the electric pressure regulation of row and the joint after the pressure regulation is pressed the oil servomotor that is supplied to each frictional engagement member, thus the jointing state of these a plurality of frictional engagement members is controlled.
But; In patent documentation 1 disclosed automatic transmission; Like Fig. 3 of above-mentioned patent documentation and shown in Figure 4; When retaining (R) is retreated in formation, press oil circuit (4104), B2 control valve (4600) and B2 oil circuit (3622) via the R gear and be supplied to the oil servomotor of B2 break from the pressure of manually operated valve (4100) output, make the B2 brake engages thus.Then; With manually operated valve (4100) when the R gear switches to N gear or D gear; Opposite when being supplied to, the oil pressure of the oil servomotor of B2 break is pressed oil circuit (4104) via B2 oil circuit 3622, B2 control valve (4600) and R gear and is discharged rapidly from the floss hole (EX) of manually operated valve (4100).
The existing technology document
Patent documentation
Patent documentation 1: TOHKEMY 2006-112503 communique
Summary of the invention
The problem that invention will solve
But, for example, when entering garages such as vehicle; Under the situation of the gear that switches manually operated valve with the order of R-N-R; When gear switches to N from R, if as above-mentioned patent documentation 1 is said, from the oil servomotor of B2 break, promptly discharge oil, then then when N switches to R once more when the oil servomotor of B2 break is supplied with oil pressure; The meeting spended time, or have the possibility that causes producing the speed change impact.Therefore, there is following requirement, promptly carrying out requiring when above-mentioned R-N switches from the oil servomotor of B2 break, to be not easy to discharge oil.
On the other hand; Under the situation that the oil pressure from the oil servomotor of B2 break is not easy to discharge all the time, there is following possibility, promptly; When manually operated valve is in the D gear, leak into the oil servomotor that oil in the discharge oil circuit of B2 break can be supplied to the B2 break.From such viewpoint, there be the following requirement opposite thus, promptly require from the oil servomotor of B2 break, to discharge easily oil with above-mentioned requirements.
Therefore; The objective of the invention is to, a kind of hydraulic pressure control device of automatic transmission is provided, in the hydraulic pressure control device of this automatic transmission; With regard to regard to discharging oil pressure second oil servomotor of the second frictional engagement member; Be not easy when R-N switches to discharge carrying out, on the other hand, when being in D gear etc., discharge easily.
The means that are used to deal with problems
The present invention's (for example Fig. 3 reference) is the hydraulic pressure control device (11) of automatic transmission (3); Have: first oil servomotor (41) of the first frictional engagement member (C-3); It is retreating gear (R) and the gear that advances (D) is supplied to oil; Second oil servomotor (42) of the second frictional engagement member (B-2), it retreats gear (R) and neutral gear (N) is supplied to oil said; The hydraulic pressure control device (11) of this automatic transmission (3) is characterised in that to have: manually operated valve (MV), it has to be used to import lead presses (P L) inlet opening (MVb) and with the said main (P of pressure that is imported L) press (P as retreating gear REV) delivery outlet (MVd) exported, linear solenoid valve (SLC3), it is to the said main (P that presses L) carry out pressure regulation and be used as moving oil pressure (P SLC3) export; First switching part (21, S1); Its action oil pressure switching that said linear solenoid valve (SLC3) is supplied with exports said first oil servomotor (41) and said second oil servomotor (42) to, retreats gear and presses oil circuit (g1, f), and it is connected with said delivery outlet (MVd); Second switching part (22, S2), it is with said action oil pressure (P SLC3) or the said gear pressure (P that retreats REV) switch and to be supplied to said second oil servomotor (42); Discharge and postpone oil circuit (i); It discharges oil pressure via the delay portion (30) that the discharge that is used to make oil pressure postpones; The 3rd switching part (22, S2); It presses oil circuit (g1) and said discharge delay oil circuit (i) to be connected with the said gear of retreating, and presses oil circuit (g1) and said discharge delay oil circuit (i) switching to make the said gear of retreating press oil circuit (g1) or said discharge delay oil circuit (i) to be communicated with said second oil servomotor (42) to the said gear of retreating; When said manually operated valve (MV) switches to said neutral gear (N); Said the 3rd switching part (22, S2) makes said second oil servomotor (42) and said discharge postpone oil circuit (i) to be communicated with; Switch to the said gear that advances (D) or said when retreating gear (R) at said manually operated valve (MV), said the 3rd switching part (22, S2) makes said second oil servomotor (42) and the said gear of retreating press oil circuit (g1) to be communicated with.
In addition, the present invention's (for example, with reference to Fig. 3) is characterised in that, said second switching part (22, S2) and said the 3rd switching part (22 and S2) are made up of a switching valve (22) and the solenoid valve (S2) that is used to switch said switching valve (22).
In addition, the reference character in the above-mentioned bracket is to be used for contrasting with accompanying drawing, and this is for the ease of understanding invention, can not producing any influence to the scope of claims.
The invention effect
The present invention according to technological scheme 1; The 3rd switching part can make second oil servomotor postpone the oil circuit connection with discharging when manually operated valve switches to the neutral gear; Make second oil servomotor when advancing gear or retreating gear and retreat gear and press oil circuit to be communicated with and switch at manually operated valve; Thereby switch under the situation of neutral at manually operated valve, the oil pressure that can make second oil servomotor postpones oil circuit and discharges and make second oil servomotor to keep oil pressure at leisure via discharging, on the other hand; Existence can take place can press oil circuit promptly discharge oil pressure via retreating gear in the gear that advances etc. of oil leakage etc. when keeping oil pressure.That is, can separate to use and discharge the delay oil circuit and retreat gear pressure oil circuit according to the switching condition of manually operated valve.And; Thus for example in delay portion employed throttle orifice become big to the degrees of freedom of diameter; Thereby can be reduced in the joint impact of the frictional engagement member when retreating gear-neutral gear-retreat gear (R-N-R) and switching, perhaps can make when switching to neutral the second frictional engagement member smoothly to conduction.
According to the present invention of technological scheme 2, owing to can reduce the number of switching valve, thereby can reduce part number and overall structure is oversimplified.
Description of drawings
Fig. 1 shows the sketch of automatic transmission of the present invention.
Fig. 2 is the table of joint of this automatic transmission.
Fig. 3 shows the circuit diagram of hydraulic pressure control device of the automatic transmission of first mode of execution.
Fig. 4 is the flow chart of action of hydraulic pressure control device that is used to explain the automatic transmission of first mode of execution.
Fig. 5 is the sequential chart of the R-N-D of hydraulic pressure control device that is used to explain the automatic transmission of first mode of execution action when switching.
Fig. 6 is the sequential chart of the R-N-R of hydraulic pressure control device that is used to explain the automatic transmission of first mode of execution action when switching.
Fig. 7 shows the circuit diagram of hydraulic pressure control device of the automatic transmission of second mode of execution.
Embodiment
＜the first mode of execution＞
Below, according to Fig. 1 to Fig. 6, first mode of execution of the present invention is described.
[schematic configuration of automatic transmission]
At first, according to Fig. 1, the schematic configuration that can be suitable for automatic transmission 3 of the present invention is described.As shown in Figure 1; Be suitable for the for example automatic transmission 3 of FF (front-mounted engine, front-wheel drive) type vehicle; Have the input shaft 8 of the automatic transmission 3 that can be connected, and to have axially be the fluid torque converter 4 and automatic transmission 5 at center with this input shaft 8 with motor (not shown).
Above-mentioned fluid torque converter 4 has pump impeller 4a and turbine 4b; And this turbine 4b is connected with the input shaft 10 of above-mentioned automatic transmission 5; Wherein, Above-mentioned pump impeller 4a is connected with the input shaft 8 of automatic transmission 3, the rotation that above-mentioned turbine 4b is transmitted this pump impeller 4a via the action fluid, and the input shaft 10 of above-mentioned automatic transmission 5 sets to coaxial with above-mentioned input shaft 8.In addition, this fluid torque converter 4 has lock-up clutch 7, if this lock-up clutch 7 engages, the rotation of the input shaft 8 of then above-mentioned automatic transmission 3 directly is passed to the input shaft 10 of automatic transmission 5.
In above-mentioned automatic transmission 5, on input shaft 10, have planetary pinion SP and planetary gear unit PU.Above-mentioned planetary pinion SP is so-called single-stage pinion type planetary pinion, has sun gear S1, planet carrier CR1 and gear ring R1, has the small gear P1 with sun gear S1 and gear ring R1 engagement on this planet carrier CR1.
In addition; This planetary gear unit PU is that what is called is drawn Wella formula planetary pinion; Have four such rotating members of sun gear S2, sun gear S3, planet carrier CR2 and gear ring R2, and, intermeshing long small gear PL and short and small gear PS on this planet carrier CR2, had; And above-mentioned long small gear PL and sun gear S2 and gear ring R2 engagement, and above-mentioned short and small gear PS and sun gear S3 engagement.
The sun gear S1 of above-mentioned planetary pinion SP is connected with the one mode and is fixed on the not shown lug boss on the gearbox 9, and the rotation of this sun gear S1 is fixed thus.In addition, above-mentioned gear ring R1 carries out the rotation identical with the rotation of above-mentioned input shaft 10 (below, be referred to as " input rotation ").And; Through this sun gear S1 that is fixed and this gear ring R1 that imports rotation; Above-mentioned planet carrier CR1 imports the deceleration rotation that rotation is slowed down, and this above-mentioned planet carrier CR1 is connected with clutch C-1 (the first frictional engagement member) and clutch C-3 (the 3rd frictional engagement member).
The sun gear S2 of above-mentioned planetary gear unit PU is connected with the break B-1 that is made up of band brake; And freely fix with respect to gearbox 9; And sun gear S2 is connected with above-mentioned clutch C-3, and the deceleration rotation of above-mentioned planet carrier CR1 freely inputs to sun gear S2 via this clutch C-3.In addition, above-mentioned sun gear S3 is connected with clutch C-1, and the deceleration of above-mentioned planet carrier CR1 rotation freely inputs to above-mentioned sun gear S3.
And then above-mentioned planet carrier CR2 is connected with the clutch C-2 (the second frictional engagement member) of the rotation that is transfused to input shaft 10, thereby the input rotation freely inputs to planet carrier CR2 via this clutch C-2; In addition, planet carrier CR2 is connected with overrunning clutch F-1 and break B-2, through this overrunning clutch F-1; Planet carrier CR2 is limited with respect to the rotation of gearbox 9 to a direction; And through this break B-2, the rotation of planet carrier CR2 can freely be fixed.And above-mentioned gear ring R2 is connected with counter shaft gear 11, and this counter shaft gear 11 is via not shown counter drive shaft and differential cross pin and be connected with driving wheel.
With regard to the automatic transmission 1 of said structure; Through such shown in the table of joint of Fig. 2 each clutch C-1 to C-3, break B-1 and B-2, the overrunning clutch F-1 shown in the sketch of Fig. 1 engaged or separate, form 1 retaining (1ST) that advances to advancing 6 retainings (6TH) and retreat 1 retaining (REV).
[schematic configuration of hydraulic pressure control device]
Then, to the hydraulic pressure control device 1 of automatic transmission of the present invention 1Describe.At first, to hydraulic pressure control device 1 1In omission the generation part of illustrated main pressures, secondary pressure, adjusting pressure, gear pressure etc., carry out rough explanation.In addition, the generation part that these main pressures, secondary pressure, adjusting pressure, gear are pressed is identical with the hydraulic pressure control device of general automatic transmission, is well-known structure, thereby carries out simple declaration.
This hydraulic pressure control device 1 1For example have in the back the manually operated valve MV that details, omit illustrated oil pump, primary regulating valve (primarily regulator valve), secondary modulating valve (secondary regulator valve), solenoid valve (solenoid modulator valve) and linear solenoid valve (linear solenoid) etc.; For example when engine start; The rotation of oil pump and motor is driven linkedly; Attract the mode of oil to produce oil pressure with illustrated food tray never via filter screen thus; Wherein, the said oil pump pump impeller 4a that is connected above-mentioned fluid torque converter 4 goes up and is driven in rotation.
By the signal pressure P of primary regulating valve based on linear solenoid valve SLT, come the oil pressure that is generated by above-mentioned oil pump is discharged adjustment, and be main (line pressure) P of pressure this oil pressure pressure regulation L, wherein, above-mentioned signal pressure P SLTIt is linear solenoid valve carries out pressure regulation output according to throttle opening signal pressure.Should lead and press P LThe linear solenoid valve SLC3 that is supplied to manually operated valve (gear switching valve) MV, solenoid valve and is described in detail at the back etc.Be supplied to the main P of pressure of solenoid valve wherein L, become the roughly adjusting pressure P of constant voltage of pressure by this valve pressure regulation MOD, and should regulate and press P MODBe supplied to above-mentioned linear solenoid valve, the solenoid valve S1 that is described in detail and S2 etc. at the back, with first pressing as these valves.
In addition, for example again the oil pressure of discharging from above-mentioned primary regulating valve is discharged adjustment, and be that pressure regulation becomes secondary pressure P this oil pressure pressure regulation by secondary modulating valve SEC, should secondary pressure P SECBe supplied to for example lubricating oil path and machine oil cooler etc., and be supplied to fluid torque converter 4, but also be used to control lock-up clutch 7.
On the other hand; As shown in Figure 3; The manually operated valve MV that is described in detail of back have the speed change lever machinery that is arranged on the driver's seat (not shown) (or) the valve rod MVp of driving; Through according to the position of switching this valve rod MVp, set the above-mentioned main P of pressure that is imported thus by the selected gear of speed change lever (for example P, R, N, D) LOutput state and non-output state (discharging).
[detailed structure of the speed Control part in the hydraulic pressure control device]
Then, according to Fig. 3, to hydraulic pressure control device 1 of the present invention 1In the part of mainly carrying out speed Control describe.In addition, in this mode of execution, for the position of valve rod is described, the position that will do part on the right side shown in Fig. 3 is called " right subluxation is put ", the position of left-half is called " left subluxation is put ".
This hydraulic pressure control device 1 1Have second oil servomotor (oil servomotor) 42 of first oil servomotor (oil servomotor) 41, second frictional engagement member (break) B-2 of manually operated valve MV, first frictional engagement member (clutch) C-3, through to the main P of pressure LCarry out pressure regulation and be used as moving oil pressure (engage press) P SLC3Linear solenoid valve (linear solenoid valve) SLC3 of output, as C3 relay valve (the relay valve) 21 and the solenoid valve S1 of first switching part, retreat gear press oil circuit (oil circuit) g1, as the B2 relay valve 22 and the solenoid valve S2 of second switching part, discharge postpone oil circuit i (part of oil circuit e, g4, g5, g6, oil circuit g2 and oil circuit g1), as the B2 relay valve 22 and the solenoid valve S2 of the 3rd switching part.
Here, though detail in the back, first switching part has C3 relay valve 21 and solenoid valve S1, and this first switching part is used for action oil pressure (engage and press) P that linear solenoid valve SLC3 is supplied with SLC3Switch and be supplied to oil servomotor 41 and oil servomotor 42.In addition, discharging delay oil circuit i is the oil circuit that is connected with the floss hole MVq of manually operated valve MV via delay portion 30, has the part of oil circuit e, g4, g5, g6, oil circuit g2 and oil circuit g1.In addition; In the circuit diagram of Fig. 3; Second switching part and the 3rd switching part constitute one, have second clutch effect relay valve (second clutch apply relay valve) 22 and solenoid valve S1, and supply with the R gear with being connected with manually operated valve MV and press P REVThe gear of retreating press oil circuit (oil circuit) g1 to be connected, and will move oil pressure (engaging pressure) P SLC3Or the R gear is pressed P REVSwitch and be supplied to oil servomotor 42; In addition; Second switching part and the 3rd switching part can be pressed oil circuit (oil circuit) g1 and discharge and postpone oil circuit i and be connected with retreating gear, and press oil circuit (oil circuit) g1 to postpone oil circuit i and switch to make and retreat gear and press oil circuit (oil circuit) g1 or discharge and postpone oil circuit i and be communicated with oil servomotor 42 with discharging to retreating gear.
Above-mentioned manually operated valve MV has valve rod MVp, also has to be used to import the main P of pressure LThe main P that presses of inlet opening MVa, output LBe used as the D gear and press P DThe main P that presses of delivery outlet MVc, output LBe used as the R gear and press P REVDelivery outlet MVd, floss hole MVq, wherein, above-mentioned valve rod MVp is Parking gear (P gear), retreats gear (R gear), neutral gear (N gear), the gear that advances (D gear) etc. and by being switched according to the selected gear of speed change lever.
In above-mentioned manually operated valve MV,,, be used in the above-mentioned main P of pressure of input then based on the position of this valve rod MVp if selected the D gear based on the operation of speed change lever LThe main inlet opening MVa of pressure press delivery outlet (the D gear is pressed delivery outlet) MVc to be communicated with the gear that advances, and press the main P of pressure of delivery outlet MVc output from this D gear LThe gear that is used as advancing is pressed (D gear pressure) P DIf selected the R gear,, make the above-mentioned main inlet opening MVa of pressure and retreat gear pressure delivery outlet (the R gear is pressed delivery outlet) MVd to be communicated with, and press delivery outlet MVd to export the master from this R gear and press P then based on the position of this valve rod MVp based on the operation of speed change lever LBe used as retreating gear and press (R gear pressure P REV).In addition; When having selected P gear and N gear based on the operation of speed change lever; The above-mentioned main inlet opening MVa of pressure presses delivery outlet MVc and R gear to press between the delivery outlet MVd with the D gear and is cut off by valve rod MVp, and these D gears pressure delivery outlets MVc is communicated with not shown floss hole, in addition; The R gear presses delivery outlet MVd to be connected with floss hole MVq, promptly is in the D gear and presses P DAnd the R gear is pressed P REVBe discharged the non-output state of (discharge).
Above-mentioned linear solenoid valve SLC3 is the valve that when outage, is in the normal close type of non-output state, and this above-mentioned linear solenoid valve SLC3 has: inlet opening SLC3a, it is transfused to the main P of pressure via oil circuit a LDelivery outlet SLC3b, it will be to this main P that presses L(action oil pressure) P is pressed in the control of carrying out pressure regulation and obtaining SLC3Press P as engaging C3, engage to press P B2 Export oil servomotor 41,42 to.Promptly; This linear solenoid valve SLC1 cut off inlet opening SLC3a and delivery outlet SLC3b and is in non-output state in when outage; And based on and when being in "on" position from the command value of not shown control device (ECU); The amount (opening amount) that inlet opening SLC3a and delivery outlet SLC3b is communicated with according to this command value increases, and promptly can export the corresponding joint of and instruction value and press P C3And, the delivery outlet SLC3b of this linear solenoid valve SLC3 via oil circuit b1 and throttle orifice 31 and with after the inlet opening 21c of the C3 relay valve 21 stated be connected.In addition, linear solenoid valve SLC3 has inlet opening SLC3c, and this inlet opening SLC3c is connected with the oil circuit b2 that comes out from above-mentioned oil circuit b1 branch, and when above-mentioned linear solenoid valve SLC3 outage, is communicated with floss hole SLC3d, and this connection is cut off when switching on.
Solenoid valve S1 is the valve that when outage, is in the normal close type of non-output state, and this solenoid valve S1 has: inlet opening S1a, it is transfused to above-mentioned adjusting via oil circuit c1, c2 and presses P MODDelivery outlet S1b, it should regulate pressure P in when energising when " ON " () MODRoughly as it is as signal pressure P S1Export.This delivery outlet S1b is connected with the inlet opening 22b of the B2 relay valve 22 that details in the back via oil circuit d1.
Identical ground with above-mentioned solenoid valve S1, solenoid valve S2 is the valve that when outage, is in the normal close type of non-output state, and this solenoid valve S2 has: inlet opening S2a, it is transfused to above-mentioned adjusting via oil circuit c1, c3 and presses P MODDelivery outlet S2b, it should regulate pressure P in when energising when " ON " () MODRoughly as it is as signal pressure P S2Export.This delivery outlet S2b is connected with the 22r of grease chamber of the B2 relay valve that details in the back via oil circuit e1.
C3 relay valve 21 have valve rod 21p and to this valve rod 21p to figure in the top (left half position side) application of force spring 21s; In addition; Upper end side at this valve rod 21p has the 21r1 of grease chamber; And have the 21r2 of grease chamber in lower end side, and upside has inlet opening 21a, delivery outlet 21b, inlet opening 21c, delivery outlet 21d and floss hole 21EX successively from figure.In C3 relay valve 21; By switch to right half locational valve rod 21p (below; Be called " putting accordingly " with the right subluxation of valve rod 21p), inlet opening 21a and delivery outlet 21b are cut off, inlet opening 21c and delivery outlet 21b are communicated with; Inlet opening 21c and delivery outlet 21d are cut off, delivery outlet 21d and floss hole 21EX are communicated with.
In addition, in C3 relay valve 21, put accordingly with the left subluxation of valve rod 21p; Put with above-mentioned right subluxation inlet opening 21a and delivery outlet 21b are communicated with; Inlet opening 21c and delivery outlet 21b cut off, and inlet opening 21c and delivery outlet 21d are communicated with, and delivery outlet 21d and floss hole 21EX cut off.
B2 relay valve 22 have valve rod 22p and to this valve rod 22p to figure in the top (left half position side) application of force spring 22s; In addition; Upper end side at this valve rod 22p has the 22r of grease chamber; And upside has floss hole 22EX, delivery outlet 22a, inlet opening 22b, inlet opening 22c, delivery outlet 22d and inlet opening 22e successively from figure.In B2 relay valve 22, put accordingly with the right subluxation of valve rod 22p, floss hole 22EX and delivery outlet 22a cut off, and inlet opening 22b and delivery outlet 22a are communicated with, and inlet opening 22c and delivery outlet 22d cut off, and inlet opening 22e and delivery outlet 22d are communicated with.
In addition, in B2 relay valve 22, put accordingly with the left subluxation of valve rod 22p; Put on the contrary with above-mentioned right subluxation, floss hole 22EX and delivery outlet 22a are communicated with, and inlet opening 22b and delivery outlet 22a cut off; Inlet opening 22c and delivery outlet 22d are communicated with, and inlet opening 22e and delivery outlet 22d cut off.
The delivery outlet SLC3b of above-mentioned linear solenoid valve SLC3 is via oil circuit b1, throttle orifice 31 and be connected with the inlet opening 21c of C3 relay valve 21.Here, be in left subluxation at valve rod 21p and put with right subluxation and put last time, different with the delivery outlet that this inlet opening 21c is communicated with.That is, put accordingly with the former the left subluxation of valve rod 21p, this inlet opening 21c is communicated with delivery outlet 21d, and is connected with oil servomotor 41 via oil circuit b3.In addition, from the vent line b4 of oil circuit b3 branch, this oil circuit b4 is connected with the 21r2 of grease chamber of C3 relay valve 21.On the other hand, put accordingly with the right subluxation of valve rod 21p, inlet opening 21c is communicated with delivery outlet 21b, and then is connected with the inlet opening 22e of B2 relay valve 22 via oil circuit e.Put accordingly with the right subluxation of valve rod 22p, this inlet opening 22e is communicated with delivery outlet 22d, and then is connected with oil servomotor 42 via oil circuit f.
As stated; With regard to linear solenoid valve SLC3; Switch to left subluxation at the valve rod 21p of C3 relay valve 21 and put last time, this linear solenoid valve SLC3 is connected with oil servomotor 41 via C3 relay valve 21, puts last time and switch to right subluxation at valve rod 21p; And switch to right subluxation at the valve rod 22p of B2 relay valve 22 and put last time, be communicated with oil servomotor 42.If with C3 relay valve 21 is benchmark and in other words, with regard to C3 relay valve 21, switch to left subluxation at its valve rod 21p and put last time, can be with pressing P from the joint of linear solenoid valve SLC3 output SLC3Be supplied to oil servomotor 41, switch to right subluxation at its valve rod 21p and put last time, can be with pressing P from the joint of linear solenoid valve SLC3 output SLC3Be supplied to oil servomotor 42 via B2 relay valve 22.That is, C3 relay valve 21 can be selected a ground with the supply object of pressing from the joint of linear solenoid valve SLC3 output and switch to an oil servomotor oil servomotor 41 and the oil servomotor 42.
The R gear of above-mentioned manually operated valve MV presses delivery outlet MVd to be connected with the inlet opening 22c of B2 relay valve 22 via oil circuit g1; And; Put accordingly with the left subluxation of valve rod 22p, this inlet opening 22c is communicated with delivery outlet 22d, and then is connected with oil servomotor 42 via above-mentioned oil circuit f.In addition; Above-mentioned R gear presses delivery outlet MVd to be connected with the above-mentioned inlet opening 21a of C3 relay valve 21 via the oil circuit g2 that comes out from oil circuit g1 branch, throttle orifice 32, safety check 51, oil circuit g3 and oil circuit g4; And; Put accordingly with the left subluxation of valve rod 21p; This inlet opening 21a is communicated with delivery outlet 21b, and then is connected with the inlet opening 22e of B2 relay valve 22 via above-mentioned oil circuit e, and then via putting accordingly the delivery outlet 22d that is communicated with this inlet opening 22e, above-mentioned oil circuit f with the right subluxation of valve rod 22p and being connected with oil servomotor 42.As stated, above-mentioned oil circuit e is with pressing P from the joint of linear solenoid valve SLC3 output SLC3Employed oil circuit when C3 relay valve 21 is supplied to B2 relay valve 22.That is, oil circuit e can be also used as first oil circuit and second oil circuit, and first oil circuit is, can put accordingly with the right subluxation of the valve rod 21p of C3 relay valve 21 above-mentioned the joint pressed P SLC3Be supplied to the oil circuit of B2 relay valve 22 from C3 relay valve 21, second oil circuit is, can put accordingly and will press P from the R gear of above-mentioned manually operated valve MV with the left subluxation of the valve rod 21p of C3 relay valve 21 REVBe supplied to the oil circuit of B2 relay valve 22 from C3 relay valve 21.The oil circuit g5 that comes out from above-mentioned oil circuit g3 branch presses delivery outlet MVd to be connected via the part of throttle orifice 33, throttle orifice 34, safety check 52, oil circuit g6, above-mentioned oil circuit g2 and g1 with the R gear of manually operated valve MV.In the circuit diagram of Fig. 3, constitute the discharge of pressing delivery outlet MVd to be connected by the part of above-mentioned oil circuit e, g4, g5, g6, g2 and oil circuit g1 and postpone oil circuit i with the R gear of manually operated valve MV.When manually operated valve MV was in N gear, D gear, this was discharged delay oil circuit i and presses delivery outlet MVd to be communicated with floss hole MVq via the R gear.On the other hand, when being in the R gear, this connection is cut off and the R gear presses delivery outlet MVd to be communicated with inlet opening MVa.In addition, discharge delay oil circuit i midway at this, constitute delay portion 30 by above-mentioned throttle orifice 33 and 34, safety check 51 and 52, this delay portion 30 makes from discharging and postpones oil circuit i discharges oil pressure from floss hole MVq via R gear pressure delivery outlet MVd discharge delay.
As stated; With regard to the R gear of manually operated valve MV is pressed delivery outlet MVd; Switch to left subluxation at the valve rod 22p of above-mentioned B2 relay valve 22 and put last time; This R gear presses delivery outlet MVd to be communicated with oil servomotor 42 via B2 relay valve 22, and switches to that right subluxation is put and the valve rod 21p of C3 relay valve 21 switches to left subluxation and puts last time at the valve rod 22p of above-mentioned B2 relay valve 22, and this R gear pressure delivery outlet MVd is communicated with oil servomotor 42 via C3 relay valve 21, B2 relay valve 22.If with B2 relay valve 22 is benchmark and in other words, B2 relay valve 22 is selected a ground and is switched inlet opening 22c and inlet opening 22e, thereby will input to pressure (the R gear pressure P of any inlet opening REV) from delivery outlet 22d output, and be supplied to oil servomotor 42.
By above-mentioned solenoid valve S1 and solenoid valve S2 above-mentioned C3 relay valve 21 and B2 relay valve 22 are switched.The delivery outlet S2b of solenoid valve S2 is connected with above-mentioned oil circuit e1, and this oil circuit e1 is connected with the 22r of grease chamber of B2 relay valve 22.In addition, the delivery outlet S1b of solenoid valve S1 is connected with above-mentioned oil circuit d1, and this oil circuit d1 is connected with the inlet opening 22b of B2 relay valve 22.Put accordingly with the right subluxation of valve rod 22p, this inlet opening 22b is communicated with delivery outlet 22a, and then is connected with the 21r1 of grease chamber of C3 relay valve 21 via oil circuit h.Above-mentioned solenoid valve S2 will press P via the adjusting of above-mentioned oil circuit c1, the c3 S2a input from the inlet opening when being switched on power supply (ON) MODRoughly as it is from delivery outlet S2b output, and with its via oil circuit e1 as signal pressure P S2Input to the 22r of grease chamber of B2 relay valve 22.B2 relay valve 22 is by this signal pressure P S2Input, overcome the active force of spring 22s and valve rod 22p switched to right subluxation and put.On the other hand, solenoid valve S2 is when being disconnected power supply (OFF), and signal pressure PS2 is not input to B2 relay valve 22 22r of grease chamber, thereby valve rod 22p is by the active force of spring 22s and switch to left subluxation and put.
Above-mentioned solenoid valve S1 will input to the adjusting pressure P of inlet opening S1a via above-mentioned oil circuit c1, c2 when being switched on power supply (ON) MODRoughly as it is from delivery outlet S1b output, and with its via oil circuit d1 as signal pressure P S1Input to the inlet opening 22b of B2 relay valve 22.This signal pressure P S1Via putting the delivery outlet 22a that is communicated with inlet opening 22b accordingly, oil circuit h and input to the 21r1 of grease chamber of C3 relay valve 21 with the left subluxation of the valve rod 22p of B2 relay valve 22.C3 relay valve 21 is by this signal pressure P S1Input, make valve rod 21p overcome the active force of spring 21s and switch to right subluxation and put.On the other hand, C3 relay valve 21 is perhaps put accordingly signal pressure P with the left subluxation of the valve rod 22p of B2 relay valve 22 when being disconnected power supply (OFF) S1Be not input to the 21r1 of grease chamber, thereby valve rod 21P is by the active force of spring 21s and switch to left subluxation and put.
[action of hydraulic pressure control device]
Then, to the hydraulic pressure control device 1 of this mode of execution 1Effect describe.
For example if the driver opens ignition mechanism, then this hydraulic pressure control device 1 1Begin to carry out oil pressure control.At first; When the chosen position of speed change lever for example is in P gear or N gear, for example if engine start, then based on the rotation of motor and oil pump (not shown) rotation; Thereby the generation oil pressure, and as stated by primary regulating valve and solenoid valve with this oil pressure respectively pressure regulation be output as the main P of pressure LPress P with regulating MODThereby, will lead and press P LInput to the inlet opening MVa of manually operated valve MV, and then should lead and press P LInput to the inlet opening SLC3a of linear solenoid valve SLC3 via oil circuit a, and will regulate and press P MODInput to inlet opening S1a, the S2a of solenoid valve S 1, S2 via oil circuit c1, c2, c3.
Then, for example the driver with speed change lever when the N gear positions is operated to the D gear positions, the D gear is pressed P DPress delivery outlet MVc to export other not shown linear solenoid valves to from the D gear of manually operated valve MV via not shown oil circuit.Here, for example, when the driver makes the vehicle speedup, from 1 retaining (1ST) to the order of forward gear (6TH) speed change successively of advancing.
Thereafter; For example make vehicle deceleration the driver; And retaining falls and after the state of 1 retaining that advances stopped, if speed change lever is operated to the N gear positions from the D gear positions, the D gear of then above-mentioned manually operated valve MV was pressed between delivery outlet MVc and the inlet opening MVa and is cut off according to the speed of a motor vehicle; And be communicated with not shown floss hole, the gear that promptly advances is pressed P DBe discharged.
In addition, simultaneously detect speed change lever by speed change lever sensor (not shown) and be in the N gear positions, and when being judged to be the N gear by control device based on this MLP, at first, linear solenoid valve SLC3 is by OFF (outage) and (engaging pressure) P is pressed in control SLC3Being discharged is 0 pressure (non-output state), and promptly the oil pressure of each oil servomotor 41,42 is discharged and clutch C-3 and break B-2 are disconnected.
[R-N-D, the action when R-N-R switches]
According to the flow chart of Fig. 4 and the sequential chart of Fig. 5, and suitable to the table of joint of Fig. 2 and the circuit diagram of Fig. 3, and the action when R-N-D is switched describes.
Beginning to carry out R-N switching (step S11; Abbreviating " S11 " below as) when handling R gear (time 0 of Fig. 5 is to time t1) before, solenoid valve S 1 is in the state of outage, and solenoid valve S2 is in "on" position; As shown in Figure 3 thus, from the signal pressure P of solenoid valve S2 S2Be input in the 22r of grease chamber of B2 relay valve 22, thereby B2 relay valve 22 is switched to right subluxation and is put.On the other hand, from the signal pressure P of solenoid valve S1 S1Be not input in the 21r1 of grease chamber of C3 relay valve 21, thereby C3 relay valve 21 is switched to left subluxation and is put.Under this state, press P from the joint of linear solenoid valve SLC3 SLC3Be supplied to oil servomotor 41 via oil circuit b1, C3 relay valve 21, oil circuit b3.In addition, press delivery outlet MVd that the R gear is pressed P at the R of manually operated valve MV gear REVBe supplied to oil servomotor 42 via oil circuit g1, C3 relay valve 21, oil circuit e, B2 relay valve 22 and oil circuit f.That is, as shown in Figure 2, clutch C-3 and break B-2 both sides engage when being in R gear (REV).
Follow to switching manually operated valve MV (time t1), discharge oil pressure to adjusting on one side gradually from clutch C-3 on one side from the discharge capacity of floss hole SLC3d discharging through the control (S12) of linear solenoid valve SLC3 is next with the corresponding position of R gear.Shown in the double dot dash line among Fig. 5, the joint of the clutch C-3 of this moment presses PC3 to descend at first more suddenly, descends lentamente thereafter.On the other hand, shown in the fine line among Fig. 5, the joint of break B-2 is pressed P B2Curved slowly descend (S13) (curb).That is, the joint of break B-2 is pressed P B2Press delivery outlet MVd and discharge via the R gear of the part of the delivery outlet 21b of the delivery outlet 22d of oil circuit f, B2 relay valve 22, inlet opening 22e, oil circuit e, C3 relay valve 21, inlet opening 21a, oil circuit g4, g5, delay portion 30 (throttle orifice 33 and 34, safety check 51 and 52), oil circuit g6, oil circuit g2, oil circuit g1 and manually operated valve MV from floss hole MVq.The part of above-mentioned oil circuit e, g4, g5, g6, oil circuit g2, g1 constitutes as stated discharges delay oil circuit i.That is, the joint of break B-2 is pressed P B2Via the oil circuit f in the oil circuit, discharge to postpone oil circuit i and discharge from the floss hole MVq of manually operated valve MV, discharge the state that the throttle orifice 33,34 that postpones the delay portion 30 among the oil circuit i etc. reduced the velocity of discharge and discharge to be arranged on thus.In order to compare, show the joint pressure P that discharges delay oil circuit i and only discharge break B-2 not establishing with wave-like line in the drawings via oil circuit g1 B2Situation under oil pressure situation about reducing.Discharge to postpone oil circuit i and come to engage pressure P like this, with through being provided with via what this discharges postponed that oil circuit i discharges break B-2 B2Situation compare, shown in arrow A 1, can make and engage press P B2Reduce lentamente, promptly can make oil pressure be not easy to be released.
If passed through the stipulated time (S14: " being ", time t2), solenoid valve S 1 energising (S15), signal pressure P thus then S1Be input in the 21r1 of grease chamber of C3 relay valve 21, put thereby C3 relay valve 21 switches to right subluxation.Thus, the joint of clutch C-3 presses PC3 to discharge and anxious subtracting from the floss hole 21EX of C3 relay valve 21.On the other hand, press via C3 relay valve 21, B2 relay valve 22 by the SLC3 of linear solenoid valve SLC3 control and make break B-2 remain on low pressure (S16).
Then, under the situation that switches to the D gear (S17: " being "), to carrying out oil-filled fast (fast fill) (S18), and then make SLC1 press cumulative (S19) with the corresponding clutch C-1 of 1 retaining that advances by not shown linear solenoid valve SLC1.SLC1 presses when becoming maximum (S20), and clutch C-1 engages.Then, if surpassed 1 retaining-2 retaining variation points (S21: " being "), then make solenoid valve S1 and S2 outage (S22, S23) at time t4.Thus, the joint of break B-2 is pressed P B2Discharge (S24) rapidly from the floss hole of B2 relay valve 22, thereby the joint of break B-2 is pressed P B2Become 0 (S25).Then, break B-1 is carried out oil-filled fast (S26), then the joint of break B-1 is pressed P B1Cumulative (S27), and engaging pressure P B1Break B-1 engages (S28) when becoming maximum.
Then, mainly with reference to Fig. 3 and Fig. 6, the action when R-N-R is switched describes.In addition, because that the R-N of R-N-R in switching switches is identical with the R-N switching during above-mentioned R-N-D switches, that is, omit explanation owing to identical with the S11 to S17 of the flow chart of Fig. 4.
In the step S17 of the flow chart of Fig. 4, carrying out under the situation that N-R switches, S1 is de-energized (S30) at time t3 solenoid valve, and the valve rod 22p of B2 relay valve 22 is in left subluxation and puts thus, and the valve rod 21p of C3 relay valve 21 is in left subluxation and puts.Thus, the R gear is pressed P REVPress delivery outlet MVd to be supplied to break B-2 from the R gear of manually operated valve MV, thereby the joint of this break B-2 is pressed P via oil circuit g1, B2 relay valve 22 and oil circuit f B2Suddenly increase.At this moment, as aforementioned, the joint of break B-2 is pressed P between time t2 and time t3 B2Remain on low pressure, thereby the joint of break B2 is pressed P B2Can suddenly increase (S31) (reference arrow A2).On the other hand, SLC3 presses cumulative (S32) through the control of linear solenoid valve SLC3, and then, clutch C-3 engages when the SLC3 pressure becomes maximum.
As stated, through being provided for discharging the joint pressure P of break B-2 separately B2Discharge postpone oil circuit i; Come when R-N switches, to discharge delay oil circuit i and discharge oil pressure via this; Can be not easy through the pressure that makes break B-2 thus to discharge and keep this pressure, thereby can make the joint pressure P of break B-2 when especially the N-R of the rear half stage when R-N-R switches switches B2Suddenly increase.In addition, postpone under the situation of oil circuit i, for example being provided with the discharge that such being not easy discharge oil; When manually operated valve MV being switched to the corresponding position of D gear; Exist oil in the discharge oil circuit leak into break B-2 can be supplied to the possibility of the oil servomotor 42 of break B-2,, postpone the oil circuit g1 that oil circuit i discharges oil pressure more easily owing to be provided with than discharge with respect to this; Thereby discharge oil pressure, thereby there is not the possibility of above-mentioned that kind through switching to this oil circuit g1.
＜the second mode of execution＞
According to Fig. 7, second mode of execution of the present invention is described.
The hydraulic pressure control device 12 of the automatic transmission 3 of this mode of execution has manual shift valve 61, as the oil servomotor 76 of the oil servomotor 75 of the clutch C-3 of the first frictional engagement member and break B-2, linear solenoid valve 62, first switching part 63, second switching part 66, the 3rd switching part 70, retreat gear and press oil circuit (oil circuit) k6, discharge and postpone oil circuit (oil circuit) k7 and as the throttle orifice 77 of delay portion.
Above-mentioned first switching part 63 has first switching valve 65 and according to first solenoid valve 64 that switches this first switching valve 65 that has or not of the output of signal pressure; Above-mentioned second switching part 66 has second switching valve 68 and according to second solenoid valve 67 that switches this second switching valve 68 that has or not of the output of signal pressure, and above-mentioned the 3rd switching part 70 has the 3rd switching valve 72 and according to the 3rd solenoid valve 71 that switches the 3rd switching valve 72 that has or not of the output of signal pressure.
First switching valve 65 is connected with linear solenoid valve 62 via oil circuit k1, in addition, is connected with oil servomotor 75 via oil circuit k2, and is connected with second switching valve 68 via oil circuit k3.Second switching valve 68 is connected with above-mentioned first switching valve 65 via above-mentioned oil circuit k3, and is connected with the 3rd switching valve 72 via oil circuit k4, and is connected with oil servomotor 76 via oil circuit k5.The 3rd switching valve 72 is connected with above-mentioned second switching valve 68 via above-mentioned oil circuit k4; And press oil circuit k6 and be connected via the R gear, and postpone oil circuit k7 and be connected with floss hole EX via the discharge of disposing throttle orifice 77 on the way with manual shift valve 61.
The hydraulic pressure control device 1 of said structure 2Through utilizing first solenoid valve 64 to switch first switching valve 65, can the joint crush-cutting of being imported via oil circuit k1 from linear solenoid valve 62 be changed and export oil circuit k2 and oil circuit k3 to.The joint pressure that exports the former oil circuit k2 to is supplied to oil servomotor 75, and on the other hand, the joint pressure that exports the latter's oil circuit k3 to is input to second switching valve 68.Manual shift valve 61 is being used to import the main P of pressure LInlet opening and floss hole EX between switching way, press oil circuit k6 to be connected with above-mentioned R gear, switching under the situation of inlet opening thus, the R gear is pressed P REVExport the R gear to and press oil circuit k6.
Through the switching of the 3rd solenoid valve 71, the 3rd switching valve 72 will be pressed P via the R gear that the R gear presses oil circuit k6 to be input to REVExport second switching valve 68 to.Through the switching of second solenoid valve 67,68 pairs of joints of being supplied with via oil circuit k3 of second switching valve are pressed and are pressed P via the R gear that oil circuit k4 is supplied with REVSwitch and be supplied to oil servomotor 76 via oil circuit k5.
The hydraulic pressure control device 1 of said structure 2Through switching the 3rd switching valve 72, the oil circuit in the time of can selecting to be used to discharge the oil pressure that is supplied to oil servomotor 76.That is, an oil circuit is to press the oil circuit of oil circuit k6 from the floss hole EX discharge of manual shift valve 61 via oil circuit k5, k4, R gear, and another oil circuit is the oil circuit of discharging from floss hole EX via oil circuit k5, k4, discharge delay oil circuit k7, throttle orifice 77.
Thus, for example can make via discharging the velocity ratio that postpones oil circuit k7 discharge oil pressure and press the speed of oil circuit k6 discharge oil pressure slower, that is, can make to be not easy to discharge from oil servomotor 76 via the R gear.Thus; As long as when R-N switches, discharge the oil circuit discharge oil pressure that postpones oil circuit k7 via having used; And for example in the D gear, use the R gear to press oil circuit k6 to discharge oil pressure, just can play the identical effect of effect with above-mentioned first mode of execution of in above-mentioned first mode of execution, explaining.
Here, first switching valve 65 and second switching valve 68 are formed as one constitute a switching valve, follow first solenoid valve 64 and second solenoid valve 67 to be formed as one constitute a solenoid valve, to replace structure shown in Figure 7.At this moment, overall structure is oversimplified.
In addition, in first mode of execution and second mode of execution of above explanation, the hydraulic pressure control device 1 of this automatic transmission has been described 1, 1 2The situation of automatic transmission 3 that is applicable to that can reach advances 6 and keeps off and retreat 1 retaining is as an example; But obviously be not limited to this; The automatic transmission of 8 retainings for example also goes for realizing advancing; Especially, so long as carry out the automatic transmission of step change, the present invention just can be applicable to any automatic transmission.
Utilizability on the industry
The hydraulic pressure control device of automatic transmission of the present invention can be used in the hydraulic pressure control device that is installed in the automatic transmission on passenger car, the truck etc.; Be particularly useful for having the hydraulic pressure control device of the automatic transmission of following requirement; This requirement is meant; When the oil servomotor that is in the frictional engagement member that is supplied to oil when retreating gear and neutral gear, discharging oil pressure, when R-N switches, require to be not easy to discharge oil pressure, and when D gear etc., require the requirement of release oil pressure easily.
The explanation of reference character
1 1, 1 2The hydraulic pressure control device of automatic transmission
3 automatic transmission
21,63 first switching parts (C3 relay valve 21)
22 second switching parts, the 3rd switching part (B2 relay valve 22)
30 delay portions
41,75 first oil servomotors (oil servomotor)
42,76 second oil servomotors (oil servomotor)
66 second switching parts
70 the 3rd switching parts
The B-2 second frictional engagement member (break)
The C-3 first frictional engagement member (clutch)
The D gear that advances
I discharges and postpones oil circuit (oil circuit)
F retreats gear and presses oil circuit (oil circuit)
G1 retreats gear and presses oil circuit (oil circuit)
G4 retreats gear and presses oil circuit (oil circuit)
G5 retreats gear and presses oil circuit (oil circuit)
G6 retreats gear and presses oil circuit (oil circuit)
MV, 61 manually operated valves
The MVb inlet opening
The MVd delivery outlet
N neutral gear
P LThe main pressure
R retreats gear
P REVRetreat gear and press (R gear pressure)
P SLC3Action oil pressure (control is pressed, engaged and press)
S1,64 first switching parts (solenoid valve)
S2 second switching part, the 3rd switching part (solenoid valve)
SLC3 linear solenoid valve (linear solenoid valve)

Claims (2)

1. the hydraulic pressure control device of an automatic transmission,
Have:
First oil servomotor of the first frictional engagement member, it is retreating gear and the gear that advances is supplied to oil,
Second oil servomotor of the second frictional engagement member, it retreats gear and the neutral gear is supplied to oil said;
It is characterized in that this hydraulic pressure control device has:
Manually operated valve, it has and is used to import main inlet opening of pressing and said main pressure of being imported pressed the delivery outlet of exporting as retreating gear,
Linear solenoid valve, it is compressed into capable pressure regulation to said master and is used as moving oil pressure and exports,
First switching part, its action oil pressure switching that said linear solenoid valve is supplied with exports said first oil servomotor and said second oil servomotor to,
Retreat gear and press oil circuit, it is connected with said delivery outlet,
Second switching part, it is retreated the gear crush-cutting with said action oil pressure or said and changes and be supplied to said second oil servomotor,
Discharge the delay oil circuit, it discharges oil pressure via being used to make oil pressure discharge the delay portion that postpones,
The 3rd switching part; It presses oil circuit and said discharge to postpone oil circuit to be connected with the said gear of retreating, and the said gear of retreating is pressed oil circuit and said discharge to postpone oil circuit to switch and make the said gear of retreating press oil circuit or said discharge to postpone oil circuit to be communicated with said second oil servomotor;
When said manually operated valve switches to said neutral gear; Said the 3rd switching part makes said second oil servomotor and said discharge postpone the oil circuit connection; Switch to the said gear or said when retreating gear that advances at said manually operated valve, said the 3rd switching part makes said second oil servomotor and the said gear of retreating press oil circuit to be communicated with.
2. the hydraulic pressure control device of automatic transmission as claimed in claim 1 is characterized in that, said second switching part and said the 3rd switching part are made up of a switching valve and the solenoid valve that is used to switch said switching valve.
CN2011800063791A 2010-03-11 2011-01-28 Automatic transmission hydraulic control device Pending CN102741593A (en)

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JP2010055012A JP5304690B2 (en) 2010-03-11 2010-03-11 Hydraulic control device for automatic transmission
JP2010-055012 2010-03-11
PCT/JP2011/051793 WO2011111434A1 (en) 2010-03-11 2011-01-28 Automatic transmission hydraulic control device

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CN102741593A true CN102741593A (en) 2012-10-17

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JP (1) JP5304690B2 (en)
CN (1) CN102741593A (en)
DE (1) DE112011100125T5 (en)
WO (1) WO2011111434A1 (en)

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JP6003609B2 (en) * 2012-12-14 2016-10-05 アイシン・エィ・ダブリュ株式会社 Hydraulic control device for automatic transmission
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Application publication date: 20121017